TL;DRThe idea is to see fog, rains, acid rains and the pollution effect increase as you progress through the game.
What ?Suppose your map is 100 hours of play,The pollution generated by your machines should leave the screen slightly gray or darken according to the level of pollution in the area where the player is, when more polluted, more difficult to see would be in the gameplay.
There could also be acidic rains, where only the player would receive damage, a very low damage, and in case the place is with enough trees, it would produce a mist just before dawn, that as the hour passed, this would disappear progressively.
In the rains, large spouts of water could fall to the ground and trickle to the sides!
Why ?I think the game would have a greater dimension of details, it is already very big on this issue, but it would be cool to see even more of what it is capable of offering the community.
I left the link for a rain mod I'm testing now, it's pretty cool